2/3 manifold allows you to make up to 3 gas connections from one regulator. Will screw directly into our regulator bodies or can be connected to a bulkhead fitting via a manifold adapter. Comes with 1 flare fitting cap to seal off one outlet if desired. Comes with 2 barbs, nuts and fisheye washers. If three connections are needed you will need one more barb, nut and fisheye washer. Outlets have built in check valves.